Rotary roller-pan.



c. PLETSCH'ER.

ROTARY ROLLER PAN.

APPLICATION FILED APR. 19. I915.

Patented Sept. 28, 1915.

3 SHEETSSHEET I.

m S S M W W C. PLETSCHER.

ROTARY ROLLER PAN.

APPLICATION FILED APR-19.1915.

l 154,9 35 Patented Sept. 28, 1915.

3 SHEETSSHEET 2.

wmvesszes: A! INViNTQR. E f A r COLUMBIA PLANOURAPH co.. WASHINGTON. D. c.

C. PLETSCHER.

ROTARY ROLLER PAN.

APPLICATION FILED APR. 19. ms.

Patented Sept. 28, 1915.

3 SHEETSSHEET 3.

ZZVESSES:

manic.

cam. PLETSCHER, or SAGINAW, MIcnieAN; essrenoa To WERNER & rrnnrnnnnn COMPANY, or seemaw, MICHIGAN.

no'rAfaY ROLLER-PAN.

License.

To all w from it may concern Be it known that T, CARL PLETSOHER, a

citizen of the Republic of Switzerland,re-

siding at Saginaw, county of Saginaw, and State of Michigamhave invented new and useful Improvements in Rotary Roller-Pans, of which the following is a specification.

This invention relates to improvements in,

rotary roller pans serving to most minutely crush, grind, mix and knead the difierent raw materials forming the ingredients of doughs, pastes and, the like and has for its object to perform these operations more efficiently, quickly and safely. To this end, I use a rotary round pan, the working surface of which is inclined evenly toward the I circumference of the pan. The latteris pr0- vided at its outer edge with a circular sidewall preferably vertical to the working shrface which ends at its upper circumference in a narrow annular part arranged steeper than the same. The top of the pan is a circular plane and carries a mushroom-like cap, the side wall of which forms a prolongation of the annular upper part of the pan. Material dropped on the cap will slide down this annular upper part onto the working surface of the pan where it is crushed, ground, mixed and. kneaded by,

means of corrugated cone-shaped rollers turning arounda shaft fixed to the structure carrying the pan, The rollers are corrugated at their slant side, and'the edgesof their ribs are parallel to the working surface and extend nearly its, whole length fromthe side wall to the upper end in the direction of the diameter of the pan, The shafts around which the rollers rotate, are preferably arranged horizontal and connected to the structure of the pan in a resilient manner in order to allow for difierences in the thickness of the .pastes or doughs worked. The material thus treated is turned over first by a curved reel turning loosely around a shaft arranged vertically to the working surface of the pan and fixed in an adjustable manner to a framework attached to the structure carrying the pan, and then by a small plow-like scraper fitting into the curved outline of the reel and fixed to the adjustable part of the framework carrying same. The material is then ready for treatment by the following roller.

The accompanying drawings showing the Specification of Letters Patent.

novel features and parts of the invention,

, X-X of Fig. 1. Fig. 3 shows the arrange ment of the resilient roller shaft. 7

A represents the rotary pan in which the dough or the like is worked by the corru-- gated conical roller B and turned over by the reel 0 and the plow-like scraper D. for treatment by a second roller 13. A E is the mushroom-shaped :top cover of A, and F the structurecarrying A. I

a indicates, the horizontal top of A, w its inclined working surface and av the inclined Patented Sept. 28, 19115.

Application filed April 19, 1915. :Serial no. 22,452.

annular plane intermediate between the top a a and the working surface a and somewhat steeper thanthelatter;

a forms the continuation of the sidewall of the mushroom-shaped cover E. Thus, material dropped by a chute on B will slide down along the sidewall of E and or, onto the ing and at work. r' i .a represents the circular sidewall which is verticalto the working surface a a, is the hollow leg arranged at the center of thetop a and thus ofthe pan A and fitting over the vertical shaft a, carried by the base f of the structure F. The pan A is supported by the rotary rollers a and revolves in the direction of the arrow by means of the toothed ring a, meshing with the gear wheel a whichis attached to the countershaft a, and driven by the gear wheel 0, fixed thereto and meshing with the gear wheel a arranged at the driving shaft a This shaft is provided with the driving pul ley a and the loose pulley o and is con nected by belt (not shown) to the pulley of the power machine.

Theyworking edge 5 of the ribs. 6,. of the corrugated roller B of which two are emworking surface a while the pan is revolvwall f, of the structure F. The lever his held down by the spring 6, fixed thereto, and to f1, to such a degree that the roller B is kept normally at its right working position. This arrangement gives the roller B a certain degree of resiliency which allows an abnormally large piece of dough press,

ing against the roller, slightly 'to lift the latter and thus prevents a' disturbance of the working or damage to the machinery of the pan I p The loose reel C is turned around its sh aft 0 by means of the dough sheet passing there by on the working surface a, of the pan The sides of the reel are parallel to al and the outline 0 of the circular part which isvertical to a is curved in such away as to cause the dough sheet at least partly to turn over. The

position of C on the working surface a, in regard to the side wall as is regulated by means of the screw 0 of theshaft '0 pro vided with the handle 0,. The shaft 0 turns in the stationary block'c fixed by the arm 7, to the sidewall f, of F and connected by the rods 0, to the movable block a, which carries the reel C and in which the screw 0 works,

- of a circular pan rotating around a vertical the shaft 0 being vertical to the sidewalls of C and the working surface 05 and fixed to the movable block 0 In this way, by working the screw, the reel'C is moved backward or forward in regard to the sidewall ofthe pan A. The dough sheet leaving the reel G is then completely turned over by the plow-' like scraper D arrangedover 'a 'behind C, and fixed by the arm (Z to the .movable'block', 0 also carrying C. The shape of D follows closely the curved outline of the reel C, and i when the latter is moved by the screw 0 the former moves with it. After passing the scraper D, the dough is ready for treatment bythe following corrugated roller B. Therefore, no attendant need touch the-dough while the pan is at work.

I. claim: 1. In a rotary roller pan, the combination shaft and havinga plain working surface slanting in straight line upward from the circumference toward the center of the pan with corrugated conical rollers working thereon and-turning loosely aroundjhorizontal resilient axles, a loose reel turning vertically to the working surface of the pan and having the outline of its circular part so curved as to be adapted to turn over the ma terial worked by the conical rollers, a shaft,

vertical to the working surface of the pan and around which the reel loosely turns, a plow-like scraper following in outline closely the curved outline of the reel, an arm carrying the shaft around which the reel turns, and the scraper, and fixed to the frame work of the machine, and appliances adapted to adjust the position ofthe reel and scraper in regard to the working surface of the pan and arranged at the arm carrying them.

2. In a rotary roller pan, the combination of a circular pan provided at its circumference-with a vertical rim and havinga plain inclined working surface slanting upward from the circumference to the center of the pan, a steeper annular part at the upper the machine and around" which the rollers loosely turn by means of the materialpassing beneath, curved loose reels for turning over the'inaterial worked by the rollers,

shafts arranged vertical to'the'working surface fand around which the reels are rotated by means of the material passing thereon, stationary plow-like scrapers-the outline of which follows closely the curved outline of the reels, arms carrying thescrapers and the shafts holding the reels, and fixed to the framework of themachine, and appliances;

arranged at these arms and adapted to ad just simultaneously the position of the reels and of the scrapers in regard to the working surface. a a I f CARL PLETSOHER,

' Witnesses: i i i LoUIs CHARLES REESE,

MORRIS L. JOHNSTON.

Copies of this patentmay'be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. v I r 

